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Experiences With Tarnished Plant Bugs in the Mississippi Delta- 2007 Angus Catchot, J.F. Smith, and J. Gore Mississippi State University 2007 Beltwide.

Published byRandolf Lester Modified over 8 years ago

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Presentation on theme: "Experiences With Tarnished Plant Bugs in the Mississippi Delta- 2007 Angus Catchot, J.F. Smith, and J. Gore Mississippi State University 2007 Beltwide."— Presentation transcript:

1 Experiences With Tarnished Plant Bugs in the Mississippi Delta- 2007 Angus Catchot, J.F. Smith, and J. Gore Mississippi State University 2007 Beltwide Cotton Conference

2 2007 Mississippi Cotton Insect Losses 5.3 0.6 0.5 0.3 Bales Lost

3 2007 Mississippi Cotton Insect Losses (Delta Region-Bt) 7.5 0.8 0.6 0.3 Bales Lost

4 2007 Mississippi Cotton Insect Losses (Hill Region-Bt) 0.7 0.1 0.2 0.04 Bales Lost

5 Tarnished Plant Bug Numbers per 100 Sweeps and Square Retention for First 3 Weeks of Squaring in Washington County, MS 2007 Denotes TPB application applied TPB Threshold

6

7 U.S. Cotton Belt Lygus spp. Control Costs - 2005 29.93 19.90 4.66 32.73 4.42 9.00 0.27 0.12 0.19 0.32 US average - $7.38 0.89 0.50 0.38 0.00 0.24 27.00 12.39

8 Management Strategies for Tarnished Plant Bug Host Plant Manipulation Minimize “edge effects” Variety Selection Correct Nozzle Selection Rotate Chemistry Shorten Spray Intervals During High Pressure Sampling Procedures

9 Host Plant Manipulation Area-wide Plant Bug Management One herbicide application from late-Feb. through March.

10 Host Plant Manipulation No. Plant Bug Applications Average

11 Minimize Edge Effects

12 Variety Selection Plant Bugs in DP 444 vs. 555 Nymph per 6 ft.

13 Variety Selection Plant Bugs per 25 Sweeps

14 Variety Selection Percent Square Retention

15 Nozzle Selection

16 Rotate Chemistry Number/6 ft. 5 days 11 days

17 Shorten Spray Intervals During High Pressure Percent Nymphs/6 ft. Pre-treatment 4 DAT with Orthene (0.5 lb)

18 Shorten Spray Intervals During High Pressure abc lbs seed cotton/acre Week 1 = 35.6/100 Sweeps Week 2 = 37/100 Sweeps Week 3 = 49.6/100 Sweeps Week 4 = 17/100 Sweeps Week 1 = 29.6/100 Sweeps Week 2 = 32.5/100 Sweeps Week 3 = 45.6/100 Sweeps Week 4 = 19.5/100 Sweeps Week 1 = 29/100 Sweeps Week 2 = 32.6/100 Sweeps Week 3 = 52.6/100 Sweeps Week 4 = 47.6/100 Sweeps *Underlined indicates plots were sprayed*

19 *Week four square retention counts were made one week after final prebloom spray at first bloom* % Square Retention Shorten Spray Intervals During High Pressure

20 Sampling Procedures

21 Thank You

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